
<!DOCTYPE HTML>
<html lang="zh-hans" >
    <head>
        <meta charset="UTF-8">
        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
        <title>2.HotSpot虚拟机对象探秘.md · 计算机 ,java , 大数据 基础知识体系</title>
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="description" content="">
        <meta name="generator" content="GitBook 3.2.3">
        <meta name="author" content="hzh">
        
        
    
    <link rel="stylesheet" href="../gitbook/style.css">

    
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-splitter/splitter.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-expandable-chapters-small/expandable-chapters-small.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-anchors/plugin.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-anchor-navigation-ex/style/plugin.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-expandable-chapters/expandable-chapters.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-toggle-chapters/toggle.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-back-to-top-button/plugin.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-code/plugin.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-search-pro/search.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-pageview-count/plugin.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-highlight/website.css">
                
            
                
                <link rel="stylesheet" href="../gitbook/gitbook-plugin-fontsettings/website.css">
                
            
        

    

    
        
    

        
    
    
    
    <meta name="HandheldFriendly" content="true"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <link rel="apple-touch-icon-precomposed" sizes="152x152" href="../gitbook/images/apple-touch-icon-precomposed-152.png">
    <link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">

    
    <link rel="next" href="3.对象存亡与垃圾收集算法.html" />
    
    
    <link rel="prev" href="1.jvm内存结构.html" />
    

    
    
    
    

    </head>
    <body>
        
<div class="book">
    <div class="book-summary">
        
            
<div id="book-search-input" role="search">
    <input type="text" placeholder="输入并搜索" />
</div>

            
                <nav role="navigation">
                


<ul class="summary">
    
    

    

    
        
        <li class="header">操作系统</li>
        
        
    
        <li class="chapter " data-level="1.1" data-path="../">
            
                <a href="../">
            
                    
                    Introduction
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="../操作系统/1.基本概述.html">
            
                <a href="../操作系统/1.基本概述.html">
            
                    
                    1.操作系统基本概述
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="../操作系统/2.进程管理之进程与线程.html">
            
                <a href="../操作系统/2.进程管理之进程与线程.html">
            
                    
                    2.进程管理之进程与线程
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="../操作系统/3.进程管理之处理机调度.html">
            
                <a href="../操作系统/3.进程管理之处理机调度.html">
            
                    
                    3.进程管理之处理机调度
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5" data-path="../操作系统/4.进程管理之进程同步.html">
            
                <a href="../操作系统/4.进程管理之进程同步.html">
            
                    
                    4.进程管理之进程同步
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.6" data-path="../操作系统/5.内存管理之基本概念.html">
            
                <a href="../操作系统/5.内存管理之基本概念.html">
            
                    
                    5.内存管理之基本概念
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.7" data-path="../操作系统/6.内存管理之虚拟内存.html">
            
                <a href="../操作系统/6.内存管理之虚拟内存.html">
            
                    
                    6.内存管理之虚拟内存
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8" data-path="../操作系统/7.IO设备管理之基本概念.html">
            
                <a href="../操作系统/7.IO设备管理之基本概念.html">
            
                    
                    7.IO设备管理之基本概念
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9" data-path="../操作系统/8.面试题总结一.html">
            
                <a href="../操作系统/8.面试题总结一.html">
            
                    
                    8.面试题总结一
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">计算机网络篇</li>
        
        
    
        <li class="chapter " data-level="2.1" data-path="../计算机网络/1.计算机网络入门基础概念.html">
            
                <a href="../计算机网络/1.计算机网络入门基础概念.html">
            
                    
                    1.计算机网络入门文章(必读)
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.2" data-path="../计算机网络/2.计算机网络通信基础.html">
            
                <a href="../计算机网络/2.计算机网络通信基础.html">
            
                    
                    2.计算机网络通信入门文章(必读)
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.3" data-path="../计算机网络/3.数据链路层.html">
            
                <a href="../计算机网络/3.数据链路层.html">
            
                    
                    3.数据链路层
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.4" data-path="../计算机网络/4.网络层1.html">
            
                <a href="../计算机网络/4.网络层1.html">
            
                    
                    4.网络层(一)
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.5" data-path="../计算机网络/5.网络层2.html">
            
                <a href="../计算机网络/5.网络层2.html">
            
                    
                    5.网络层(二)
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.6" data-path="../计算机网络/6.传输层.html">
            
                <a href="../计算机网络/6.传输层.html">
            
                    
                    6.传输层
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.7" data-path="../计算机网络/7.应用层.html">
            
                <a href="../计算机网络/7.应用层.html">
            
                    
                    7.应用层(⭐)
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.8" data-path="../计算机网络/10.HTTP相关协议.html">
            
                <a href="../计算机网络/10.HTTP相关协议.html">
            
                    
                    8.HTTP相关及发展
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.9" >
            
                <span>
            
                    
                    9.websocket
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="2.10" data-path="../计算机网络/9.面试题二.html">
            
                <a href="../计算机网络/9.面试题二.html">
            
                    
                    面试题总结一
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">数据结构篇</li>
        
        
    
        <li class="chapter " data-level="3.1" data-path="../数据结构/1.图论.html">
            
                <a href="../数据结构/1.图论.html">
            
                    
                    1.图论
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.2" data-path="../数据结构/2.图论例题.html">
            
                <a href="../数据结构/2.图论例题.html">
            
                    
                    2.图论例题
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3" data-path="../数据结构/3.散列表.html">
            
                <a href="../数据结构/3.散列表.html">
            
                    
                    3.散列表
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4" data-path="../数据结构/4.排序算法.html">
            
                <a href="../数据结构/4.排序算法.html">
            
                    
                    4.排序算法
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5" data-path="../数据结构/5.排序列题.html">
            
                <a href="../数据结构/5.排序列题.html">
            
                    
                    5.排序算法例题
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6" data-path="../数据结构/6.树论.html">
            
                <a href="../数据结构/6.树论.html">
            
                    
                    6.树论
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7" data-path="../数据结构/7.树论例题.html">
            
                <a href="../数据结构/7.树论例题.html">
            
                    
                    7.树论例题.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.8" data-path="../数据结构/9.模板.html">
            
                <a href="../数据结构/9.模板.html">
            
                    
                    数据结构模板
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">算法篇</li>
        
        
    
        <li class="chapter " data-level="4.1" data-path="../算法/leetCode周赛题解.html">
            
                <a href="../算法/leetCode周赛题解.html">
            
                    
                    leetCode周赛记录
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.2" data-path="../算法/1.时间复杂度.html">
            
                <a href="../算法/1.时间复杂度.html">
            
                    
                    1.时间复杂度
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.3" data-path="../算法/2.深度优先搜索.html">
            
                <a href="../算法/2.深度优先搜索.html">
            
                    
                    2.深度优先搜索算法
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.4" data-path="../算法/2.深度优先搜索题目集.html">
            
                <a href="../算法/2.深度优先搜索题目集.html">
            
                    
                    2.深搜题目集
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.5" data-path="../算法/3.广度优先搜索.html">
            
                <a href="../算法/3.广度优先搜索.html">
            
                    
                    3.广度优先搜索算法
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">JVM篇</li>
        
        
    
        <li class="chapter " data-level="5.1" data-path="1.jvm内存结构.html">
            
                <a href="1.jvm内存结构.html">
            
                    
                    1.jvm内存结构
            
                </a>
            

            
        </li>
    
        <li class="chapter active" data-level="5.2" data-path="2.HotSpot虚拟机对象探秘.html">
            
                <a href="2.HotSpot虚拟机对象探秘.html">
            
                    
                    2.HotSpot虚拟机对象探秘.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.3" data-path="3.对象存亡与垃圾收集算法.html">
            
                <a href="3.对象存亡与垃圾收集算法.html">
            
                    
                    3.对象存亡与垃圾收集算法.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.4" data-path="4.HotSpot的算法细节与垃圾收集器.html">
            
                <a href="4.HotSpot的算法细节与垃圾收集器.html">
            
                    
                    4.HotSpot的算法细节与垃圾收集器.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.5" data-path="5.内存分配与回收策略.html">
            
                <a href="5.内存分配与回收策略.html">
            
                    
                    5.内存分配与回收策略.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.6" data-path="6.类文件结构.html">
            
                <a href="6.类文件结构.html">
            
                    
                    6.类文件结构.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.7" data-path="7.类加载机制.html">
            
                <a href="7.类加载机制.html">
            
                    
                    7.类加载机制.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.8" data-path="8.jvm逃逸分析.html">
            
                <a href="8.jvm逃逸分析.html">
            
                    
                    8.逃逸分析技术
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">多线程篇</li>
        
        
    
        <li class="chapter " data-level="6.1" data-path="../多线程/basic/0.多线程路线图.html">
            
                <a href="../多线程/basic/0.多线程路线图.html">
            
                    
                    1.多线程学习路线图
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.2" data-path="../多线程/basic/0.java内存模型与线程.html">
            
                <a href="../多线程/basic/0.java内存模型与线程.html">
            
                    
                    2.java内存模型与线程
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.3" data-path="../多线程/3.并行程序基础.html">
            
                <a href="../多线程/3.并行程序基础.html">
            
                    
                    2.并行程序基础
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.4" data-path="../多线程/basic/0.jhappenBefore与jvm指令重排.html">
            
                <a href="../多线程/basic/0.jhappenBefore与jvm指令重排.html">
            
                    
                    3.happenBefore与jvm指令重排序
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.5" data-path="../多线程/basic/1.synchronized与volatile.html">
            
                <a href="../多线程/basic/1.synchronized与volatile.html">
            
                    
                    4.synchronized与volatile.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.6" data-path="../多线程/basic/2.ThreadLocal.html">
            
                <a href="../多线程/basic/2.ThreadLocal.html">
            
                    
                    5.ThreadLocal.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.7" data-path="../多线程/cas/1.乐观锁与悲观锁.html">
            
                <a href="../多线程/cas/1.乐观锁与悲观锁.html">
            
                    
                    6.乐观锁与悲观锁.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.8" data-path="../多线程/cas/2.CAS与atomic类.html">
            
                <a href="../多线程/cas/2.CAS与atomic类.html">
            
                    
                    7.CAS与atomic类.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.9" data-path="../多线程/aqs/1.AQS.html">
            
                <a href="../多线程/aqs/1.AQS.html">
            
                    
                    8.AQS.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.10" data-path="../多线程/aqs/2.基于AQS的并发工具.html">
            
                <a href="../多线程/aqs/2.基于AQS的并发工具.html">
            
                    
                    9.基于AQS的并发工具.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.11" data-path="../多线程/blockingQueue/1.阻塞队列.html">
            
                <a href="../多线程/blockingQueue/1.阻塞队列.html">
            
                    
                    10.阻塞队列.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.12" data-path="../多线程/pond/1.线程池与底层原理.html">
            
                <a href="../多线程/pond/1.线程池与底层原理.html">
            
                    
                    11.线程池与底层原理.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.13" data-path="../多线程/10面试题一.html">
            
                <a href="../多线程/10面试题一.html">
            
                    
                    12.面试题一
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="6.14" data-path="../多线程/10面试题二.html">
            
                <a href="../多线程/10面试题二.html">
            
                    
                    13.面试题二.md
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">java集合篇</li>
        
        
    
        <li class="chapter " data-level="7.1" data-path="../basic/collection/1.java集合.html">
            
                <a href="../basic/collection/1.java集合.html">
            
                    
                    1.集合架构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="7.2" data-path="../basic/collection/2.HashMap源码分析.html">
            
                <a href="../basic/collection/2.HashMap源码分析.html">
            
                    
                    2.hashMap底层原理
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="7.3" data-path="../basic/collection/3.ConcurrentHashMap分析.html">
            
                <a href="../basic/collection/3.ConcurrentHashMap分析.html">
            
                    
                    3.ConcurrentHashMap分析
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">设计模式篇</li>
        
        
    
        <li class="chapter " data-level="8.1" >
            
                <span>
            
                    
                    1.创造型模式
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="8.2" data-path="../设计模式/factory/三种工厂模式介绍.html">
            
                <a href="../设计模式/factory/三种工厂模式介绍.html">
            
                    
                    三种工厂模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="8.3" data-path="../设计模式/factory/实战工厂模式.html">
            
                <a href="../设计模式/factory/实战工厂模式.html">
            
                    
                    实战工厂模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="8.4" data-path="../设计模式/factory/实战抽象工厂模式.html">
            
                <a href="../设计模式/factory/实战抽象工厂模式.html">
            
                    
                    实战抽象工厂模式
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">mysql篇</li>
        
        
    
        <li class="chapter " data-level="9.1" data-path="../数据库/mysql/1.b树b+树的底层原理.html">
            
                <a href="../数据库/mysql/1.b树b+树的底层原理.html">
            
                    
                    1.mysql索引基础之b树与b+树⭐⭐
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.2" data-path="../数据库/mysql/2.mysql索引.html">
            
                <a href="../数据库/mysql/2.mysql索引.html">
            
                    
                    2.mysql索引及优化⭐⭐⭐⭐
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.3" data-path="../数据库/mysql/3.mysql存储引擎.html">
            
                <a href="../数据库/mysql/3.mysql存储引擎.html">
            
                    
                    3.mysql存储引擎.md
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.4" data-path="../数据库/mysql/4.多版本并发控制之mvcc原理.html">
            
                <a href="../数据库/mysql/4.多版本并发控制之mvcc原理.html">
            
                    
                    4.多版本并发控制之mvcc原理
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.5" data-path="../数据库/mysql/4.mysql事务.html">
            
                <a href="../数据库/mysql/4.mysql事务.html">
            
                    
                    5.mysql事务
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.6" data-path="../数据库/mysql/5.mysql锁机制.html">
            
                <a href="../数据库/mysql/5.mysql锁机制.html">
            
                    
                    6.mysql的锁机制
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.7" data-path="../数据库/mysql/6.mysql面试题一.html">
            
                <a href="../数据库/mysql/6.mysql面试题一.html">
            
                    
                    7.mysql面试题一
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">高并发中间件篇</li>
        
        
    

    
        
        <li class="header">架构理论篇</li>
        
        
    
        <li class="chapter " data-level="11.1" data-path="../架构/0.架构演进.html">
            
                <a href="../架构/0.架构演进.html">
            
                    
                    1.架构演进
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="11.2" data-path="../架构/0.微服务架构与soa架构.html">
            
                <a href="../架构/0.微服务架构与soa架构.html">
            
                    
                    2.微服务架构与soa架构
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">高可用系统篇</li>
        
        
    
        <li class="chapter " data-level="12.1" data-path="../高可用架构/1.限流.html">
            
                <a href="../高可用架构/1.限流.html">
            
                    
                    1.系统限流
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="12.2" data-path="../高可用系统/2.服务熔断.html">
            
                <a href="../高可用系统/2.服务熔断.html">
            
                    
                    2.服务熔断
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="12.3" data-path="../高可用系统/3.服务降级.html">
            
                <a href="../高可用系统/3.服务降级.html">
            
                    
                    3.服务降级
            
                </a>
            

            
        </li>
    

    
        
        <li class="header">spring-cloud 微服务篇</li>
        
        
    

    

    <li class="divider"></li>

    <li>
        <a href="https://www.gitbook.com" target="blank" class="gitbook-link">
            本书使用 GitBook 发布
        </a>
    </li>
</ul>


                </nav>
            
        
    </div>

    <div class="book-body">
        
            <div class="body-inner">
                
                    

<div class="book-header" role="navigation">
    

    <!-- Title -->
    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href=".." >2.HotSpot虚拟机对象探秘.md</a>
    </h1>
</div>




                    <div class="page-wrapper" tabindex="-1" role="main">
                        <div class="page-inner">
                            
<div id="book-search-results">
    <div class="search-noresults">
    
                                <section class="normal markdown-section">
                                
                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;"><b></b>HotSpot &#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;</a></li><ul><li><span class="title-icon "></span><a href="#&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;"><b></b>&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;</a></li><ul><li><span class="title-icon "></span><a href="#&#x5BF9;&#x8C61;&#x5934;"><b></b>&#x5BF9;&#x8C61;&#x5934;</a></li><li><span class="title-icon "></span><a href="#&#x5B9E;&#x4F8B;&#x6570;&#x636E;"><b></b>&#x5B9E;&#x4F8B;&#x6570;&#x636E;</a></li><li><span class="title-icon "></span><a href="#&#x5BF9;&#x9F50;&#x586B;&#x5145;"><b></b>&#x5BF9;&#x9F50;&#x586B;&#x5145;</a></li></ul><li><span class="title-icon "></span><a href="#&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;"><b></b>&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;</a></li><ul><li><span class="title-icon "></span><a href="#&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;"><b></b>&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;</a></li><li><span class="title-icon "></span><a href="#&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;"><b></b>&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;</a></li><li><span class="title-icon "></span><a href="#&#x521D;&#x59CB;&#x5316;"><b></b>&#x521D;&#x59CB;&#x5316;</a></li></ul><li><span class="title-icon "></span><a href="#&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><b></b>&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</a></li><ul><li><span class="title-icon "></span><a href="#&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><b></b>&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</a></li><li><span class="title-icon "></span><a href="#&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><b></b>&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</a></li></ul></ul></ul></div><a href="#hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;" id="anchorNavigationExGoTop"><i class="fa fa-arrow-up"></i></a><h1 id="hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;"><a name="hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;" class="anchor-navigation-ex-anchor" href="#hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;" class="plugin-anchor" href="#hotspot-&#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;"><i class="fa fa-link" aria-hidden="true"></i></a>HotSpot &#x865A;&#x62DF;&#x673A;&#x5BF9;&#x8C61;&#x63A2;&#x79D8;</h1>
<h2 id="&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;"><a name="&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;" class="anchor-navigation-ex-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;" class="plugin-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;</h2>
<p>&#x5728; HotSpot &#x865A;&#x62DF;&#x673A;&#x4E2D;&#xFF0C;&#x5BF9;&#x8C61;&#x7684;&#x5185;&#x5B58;&#x5E03;&#x5C40;&#x5206;&#x4E3A;&#x4EE5;&#x4E0B; 3 &#x5757;&#x533A;&#x57DF;&#xFF1A;</p>
<ul>
<li>&#x5BF9;&#x8C61;&#x5934;&#xFF08;Header&#xFF09;</li>
<li>&#x5B9E;&#x4F8B;&#x6570;&#x636E;&#xFF08;Instance Data&#xFF09;</li>
<li>&#x5BF9;&#x9F50;&#x586B;&#x5145;&#xFF08;Padding&#xFF09;</li>
</ul>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201205003829.png" alt="image-20201205003829225"></p>
<h3 id="&#x5BF9;&#x8C61;&#x5934;"><a name="&#x5BF9;&#x8C61;&#x5934;" class="anchor-navigation-ex-anchor" href="#&#x5BF9;&#x8C61;&#x5934;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5BF9;&#x8C61;&#x5934;" class="plugin-anchor" href="#&#x5BF9;&#x8C61;&#x5934;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5BF9;&#x8C61;&#x5934;</h3>
<p>&#x5BF9;&#x8C61;&#x5934;&#x8BB0;&#x5F55;&#x4E86;&#x5BF9;&#x8C61;&#x5728;&#x8FD0;&#x884C;&#x8FC7;&#x7A0B;&#x4E2D;&#x6240;&#x9700;&#x8981;&#x4F7F;&#x7528;&#x7684;&#x4E00;&#x4E9B;&#x6570;&#x636E;&#xFF1A;</p>
<ul>
<li>&#x54C8;&#x5E0C;&#x7801;</li>
<li>GC &#x5206;&#x4EE3;&#x5E74;&#x9F84;</li>
<li>&#x9501;&#x72B6;&#x6001;&#x6807;&#x5FD7;</li>
<li>&#x7EBF;&#x7A0B;&#x6301;&#x6709;&#x7684;&#x9501;</li>
<li>&#x504F;&#x5411;&#x7EBF;&#x7A0B; ID</li>
<li>&#x504F;&#x5411;&#x65F6;&#x95F4;&#x6233;   --&gt;(&#x4E0E;&#x504F;&#x5411;&#x9501;&#x7B49;&#x76F8;&#x5173;&#x7684;&#x77E5;&#x8BC6;)</li>
</ul>
<p>&#x5BF9;&#x8C61;&#x5934;&#x53EF;&#x80FD;&#x5305;&#x542B;&#x7C7B;&#x578B;&#x6307;&#x9488;&#xFF0C;&#x901A;&#x8FC7;&#x8BE5;&#x6307;&#x9488;&#x80FD;&#x786E;&#x5B9A;&#x5BF9;&#x8C61;&#x5C5E;&#x4E8E;&#x54EA;&#x4E2A;&#x7C7B;&#x3002;&#x5982;&#x679C;&#x5BF9;&#x8C61;&#x662F;&#x4E00;&#x4E2A;&#x6570;&#x7EC4;&#xFF0C;&#x90A3;&#x4E48;&#x5BF9;&#x8C61;&#x5934;&#x8FD8;&#x4F1A;&#x5305;&#x62EC;&#x6570;&#x7EC4;&#x957F;&#x5EA6;&#x3002;</p>
<h3 id="&#x5B9E;&#x4F8B;&#x6570;&#x636E;"><a name="&#x5B9E;&#x4F8B;&#x6570;&#x636E;" class="anchor-navigation-ex-anchor" href="#&#x5B9E;&#x4F8B;&#x6570;&#x636E;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5B9E;&#x4F8B;&#x6570;&#x636E;" class="plugin-anchor" href="#&#x5B9E;&#x4F8B;&#x6570;&#x636E;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5B9E;&#x4F8B;&#x6570;&#x636E;</h3>
<p>&#x5B9E;&#x4F8B;&#x6570;&#x636E;&#x90E8;&#x5206;&#x5C31;&#x662F;&#x6210;&#x5458;&#x53D8;&#x91CF;&#x7684;&#x503C;&#xFF0C;&#x5176;&#x4E2D;&#x5305;&#x62EC;&#x7236;&#x7C7B;&#x6210;&#x5458;&#x53D8;&#x91CF;&#x548C;&#x672C;&#x7C7B;&#x6210;&#x5458;&#x53D8;&#x91CF;&#x3002;</p>
<h3 id="&#x5BF9;&#x9F50;&#x586B;&#x5145;"><a name="&#x5BF9;&#x9F50;&#x586B;&#x5145;" class="anchor-navigation-ex-anchor" href="#&#x5BF9;&#x9F50;&#x586B;&#x5145;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5BF9;&#x9F50;&#x586B;&#x5145;" class="plugin-anchor" href="#&#x5BF9;&#x9F50;&#x586B;&#x5145;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5BF9;&#x9F50;&#x586B;&#x5145;</h3>
<p>&#x7528;&#x4E8E;&#x786E;&#x4FDD;&#x5BF9;&#x8C61;&#x7684;&#x603B;&#x957F;&#x5EA6;&#x4E3A; 8 &#x5B57;&#x8282;&#x7684;&#x6574;&#x6570;&#x500D;&#x3002;</p>
<p>HotSpot VM &#x7684;&#x81EA;&#x52A8;&#x5185;&#x5B58;&#x7BA1;&#x7406;&#x7CFB;&#x7EDF;&#x8981;&#x6C42;&#x5BF9;&#x8C61;&#x7684;&#x5927;&#x5C0F;&#x5FC5;&#x987B;&#x662F; 8 &#x5B57;&#x8282;&#x7684;&#x6574;&#x6570;&#x500D;&#x3002;&#x800C;&#x5BF9;&#x8C61;&#x5934;&#x90E8;&#x5206;&#x6B63;&#x597D;&#x662F; 8 &#x5B57;&#x8282;&#x7684;&#x500D;&#x6570;&#xFF08;1 &#x500D;&#x6216; 2 &#x500D;&#xFF09;&#xFF0C;&#x56E0;&#x6B64;&#xFF0C;&#x5F53;&#x5BF9;&#x8C61;&#x5B9E;&#x4F8B;&#x6570;&#x636E;&#x90E8;&#x5206;&#x6CA1;&#x6709;&#x5BF9;&#x9F50;&#x65F6;&#xFF0C;&#x5C31;&#x9700;&#x8981;&#x901A;&#x8FC7;&#x5BF9;&#x9F50;&#x586B;&#x5145;&#x6765;&#x8865;&#x5168;&#x3002;</p>
<blockquote>
<p>&#x5BF9;&#x9F50;&#x586B;&#x5145;&#x5E76;&#x4E0D;&#x662F;&#x5FC5;&#x7136;&#x5B58;&#x5728;&#xFF0C;&#x4E5F;&#x6CA1;&#x6709;&#x7279;&#x522B;&#x7684;&#x542B;&#x4E49;&#xFF0C;&#x5B83;&#x4EC5;&#x4EC5;&#x8D77;&#x7740;&#x5360;&#x4F4D;&#x7B26;&#x7684;&#x4F5C;&#x7528;&#x3002;</p>
</blockquote>
<h2 id="&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;"><a name="&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;" class="anchor-navigation-ex-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;" class="plugin-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;</h2>
<h3 id="&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;"><a name="&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;" class="anchor-navigation-ex-anchor" href="#&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;" class="plugin-anchor" href="#&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x7C7B;&#x52A0;&#x8F7D;&#x68C0;&#x67E5;</h3>
<p>&#x865A;&#x62DF;&#x673A;&#x5728;&#x89E3;&#x6790;<code>.class</code>&#x6587;&#x4EF6;&#x65F6;&#xFF0C;&#x82E5;&#x9047;&#x5230;&#x4E00;&#x6761; new &#x6307;&#x4EE4;&#xFF0C;&#x9996;&#x5148;&#x5B83;&#x4F1A;&#x53BB;&#x68C0;&#x67E5;&#x5E38;&#x91CF;&#x6C60;&#x4E2D;&#x662F;&#x5426;&#x6709;&#x8FD9;&#x4E2A;&#x7C7B;&#x7684;&#x7B26;&#x53F7;&#x5F15;&#x7528;&#xFF0C;&#x5E76;&#x4E14;&#x68C0;&#x67E5;&#x8FD9;&#x4E2A;&#x7B26;&#x53F7;&#x5F15;&#x7528;&#x6240;&#x4EE3;&#x8868;&#x7684;&#x7C7B;&#x662F;&#x5426;&#x5DF2;&#x88AB;&#x52A0;&#x8F7D;&#x3001;&#x89E3;&#x6790;&#x548C;&#x521D;&#x59CB;&#x5316;&#x8FC7;&#x3002;&#x5982;&#x679C;&#x6CA1;&#x6709;&#xFF0C;&#x90A3;&#x4E48;&#x5FC5;&#x987B;&#x5148;&#x6267;&#x884C;&#x76F8;&#x5E94;&#x7684;&#x7C7B;&#x52A0;&#x8F7D;&#x8FC7;&#x7A0B;&#x3002;</p>
<h3 id="&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;"><a name="&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;" class="anchor-navigation-ex-anchor" href="#&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;" class="plugin-anchor" href="#&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4E3A;&#x65B0;&#x751F;&#x5BF9;&#x8C61;&#x5206;&#x914D;&#x5185;&#x5B58;</h3>
<p>&#x5BF9;&#x8C61;&#x6240;&#x9700;&#x5185;&#x5B58;&#x7684;&#x5927;&#x5C0F;&#x5728;&#x7C7B;&#x52A0;&#x8F7D;&#x5B8C;&#x6210;&#x540E;&#x4FBF;&#x53EF;&#x5B8C;&#x5168;&#x786E;&#x5B9A;&#xFF0C;&#x63A5;&#x4E0B;&#x6765;&#x4ECE;&#x5806;&#x4E2D;&#x5212;&#x5206;&#x4E00;&#x5757;&#x5BF9;&#x5E94;&#x5927;&#x5C0F;&#x7684;&#x5185;&#x5B58;&#x7A7A;&#x95F4;&#x7ED9;&#x65B0;&#x7684;&#x5BF9;&#x8C61;&#x3002;&#x5206;&#x914D;&#x5806;&#x4E2D;&#x5185;&#x5B58;&#x6709;&#x4E24;&#x79CD;&#x65B9;&#x5F0F;&#xFF1A;</p>
<ul>
<li><p><strong>&#x6307;&#x9488;&#x78B0;&#x649E;</strong><br>
&#x5982;&#x679C; Java <strong>&#x5806;&#x4E2D;&#x5185;&#x5B58;&#x7EDD;&#x5BF9;&#x89C4;&#x6574;</strong>&#xFF08;&#x8BF4;&#x660E;&#x91C7;&#x7528;&#x7684;&#x662F;&#x201C;<strong>&#x590D;&#x5236;&#x7B97;&#x6CD5;</strong>&#x201D;&#x6216;&#x201C;<strong>&#x6807;&#x8BB0;&#x6574;&#x7406;&#x6CD5;</strong>&#x201D;&#xFF09;&#xFF0C;&#x7A7A;&#x95F2;&#x5185;&#x5B58;&#x548C;&#x5DF2;&#x4F7F;&#x7528;&#x5185;&#x5B58;&#x4E2D;&#x95F4;&#x653E;&#x7740;&#x4E00;&#x4E2A;&#x6307;&#x9488;&#x4F5C;&#x4E3A;&#x5206;&#x754C;&#x70B9;&#x6307;&#x793A;&#x5668;&#xFF0C;&#x90A3;&#x4E48;&#x5206;&#x914D;&#x5185;&#x5B58;&#x65F6;&#x53EA;&#x9700;&#x8981;&#x628A;&#x6307;&#x9488;&#x5411;&#x7A7A;&#x95F2;&#x5185;&#x5B58;&#x632A;&#x52A8;&#x4E00;&#x6BB5;&#x4E0E;&#x5BF9;&#x8C61;&#x5927;&#x5C0F;&#x4E00;&#x6837;&#x7684;&#x8DDD;&#x79BB;&#xFF0C;&#x8FD9;&#x79CD;&#x5206;&#x914D;&#x65B9;&#x5F0F;&#x79F0;&#x4E3A;&#x201C;<strong>&#x6307;&#x9488;&#x78B0;&#x649E;</strong>&#x201D;&#x3002;</p>
</li>
<li><p><strong>&#x7A7A;&#x95F2;&#x5217;&#x8868;</strong><br>
&#x5982;&#x679C; Java <strong>&#x5806;&#x4E2D;&#x5185;&#x5B58;&#x5E76;&#x4E0D;&#x89C4;&#x6574;</strong>&#xFF0C;&#x5DF2;&#x4F7F;&#x7528;&#x7684;&#x5185;&#x5B58;&#x548C;&#x7A7A;&#x95F2;&#x5185;&#x5B58;&#x4EA4;&#x9519;&#xFF08;&#x8BF4;&#x660E;&#x91C7;&#x7528;&#x7684;&#x662F;<strong>&#x6807;&#x8BB0;-&#x6E05;&#x9664;&#x6CD5;</strong>&#xFF0C;&#x6709;&#x788E;&#x7247;&#xFF09;&#xFF0C;&#x6B64;&#x65F6;&#x6CA1;&#x6CD5;&#x7B80;&#x5355;&#x8FDB;&#x884C;&#x6307;&#x9488;&#x78B0;&#x649E;&#xFF0C; VM &#x5FC5;&#x987B;&#x7EF4;&#x62A4;&#x4E00;&#x4E2A;&#x5217;&#x8868;&#xFF0C;&#x8BB0;&#x5F55;&#x5176;&#x4E2D;&#x54EA;&#x4E9B;&#x5185;&#x5B58;&#x5757;&#x7A7A;&#x95F2;&#x53EF;&#x7528;&#x3002;&#x5206;&#x914D;&#x4E4B;&#x65F6;&#x4ECE;&#x7A7A;&#x95F2;&#x5217;&#x8868;&#x4E2D;&#x627E;&#x5230;&#x4E00;&#x5757;&#x8DB3;&#x591F;&#x5927;&#x7684;&#x5185;&#x5B58;&#x7A7A;&#x95F4;&#x5212;&#x5206;&#x7ED9;&#x5BF9;&#x8C61;&#x5B9E;&#x4F8B;&#x3002;&#x8FD9;&#x79CD;&#x65B9;&#x5F0F;&#x79F0;&#x4E3A;&#x201C;<strong>&#x7A7A;&#x95F2;&#x5217;&#x8868;</strong>&#x201D;&#x3002;</p>
</li>
</ul>
<h3 id="&#x521D;&#x59CB;&#x5316;"><a name="&#x521D;&#x59CB;&#x5316;" class="anchor-navigation-ex-anchor" href="#&#x521D;&#x59CB;&#x5316;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x521D;&#x59CB;&#x5316;" class="plugin-anchor" href="#&#x521D;&#x59CB;&#x5316;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x521D;&#x59CB;&#x5316;</h3>
<p>&#x5206;&#x914D;&#x5B8C;&#x5185;&#x5B58;&#x540E;&#xFF0C;&#x4E3A;&#x5BF9;&#x8C61;&#x4E2D;&#x7684;&#x6210;&#x5458;&#x53D8;&#x91CF;&#x8D4B;&#x4E0A;&#x521D;&#x59CB;&#x503C;&#xFF0C;&#x8BBE;&#x7F6E;&#x5BF9;&#x8C61;&#x5934;&#x4FE1;&#x606F;&#xFF0C;&#x8C03;&#x7528;&#x5BF9;&#x8C61;&#x7684;&#x6784;&#x9020;&#x51FD;&#x6570;&#x65B9;&#x6CD5;&#x8FDB;&#x884C;&#x521D;&#x59CB;&#x5316;&#x3002;</p>
<p>&#x81F3;&#x6B64;&#xFF0C;&#x6574;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;&#x521B;&#x5EFA;&#x8FC7;&#x7A0B;&#x5C31;&#x5B8C;&#x6210;&#x4E86;&#x3002;</p>
<h2 id="&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><a name="&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5BF9;&#x8C61;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</h2>
<p>&#x6240;&#x6709;&#x5BF9;&#x8C61;&#x7684;&#x5B58;&#x50A8;&#x7A7A;&#x95F4;&#x90FD;&#x662F;&#x5728;&#x5806;&#x4E2D;&#x5206;&#x914D;&#x7684;&#xFF0C;&#x4F46;&#x662F;&#x8FD9;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;&#x5F15;&#x7528;&#x5374;&#x662F;&#x5728;&#x5806;&#x6808;&#x4E2D;&#x5206;&#x914D;&#x7684;&#x3002;&#x4E5F;&#x5C31;&#x662F;&#x8BF4;&#x5728;&#x5EFA;&#x7ACB;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#x65F6;&#x4E24;&#x4E2A;&#x5730;&#x65B9;&#x90FD;&#x5206;&#x914D;&#x5185;&#x5B58;&#xFF0C;&#x5728;&#x5806;&#x4E2D;&#x5206;&#x914D;&#x7684;&#x5185;&#x5B58;&#x5B9E;&#x9645;&#x5EFA;&#x7ACB;&#x8FD9;&#x4E2A;&#x5BF9;&#x8C61;&#xFF0C;&#x800C;&#x5728;&#x5806;&#x6808;&#x4E2D;&#x5206;&#x914D;&#x7684;&#x5185;&#x5B58;&#x53EA;&#x662F;&#x4E00;&#x4E2A;&#x6307;&#x5411;&#x8FD9;&#x4E2A;&#x5806;&#x5BF9;&#x8C61;&#x7684;&#x6307;&#x9488;&#xFF08;&#x5F15;&#x7528;&#xFF09;&#x800C;&#x5DF2;&#x3002; &#x90A3;&#x4E48;&#x6839;&#x636E;&#x5F15;&#x7528;&#x5B58;&#x653E;&#x7684;&#x5730;&#x5740;&#x7C7B;&#x578B;&#x7684;&#x4E0D;&#x540C;&#xFF0C;&#x5BF9;&#x8C61;&#x6709;&#x4E0D;&#x540C;&#x7684;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;&#x3002;</p>
<h3 id="&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><a name="&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</h3>
<p><strong>&#x5806;&#x4E2D;&#x9700;&#x8981;&#x6709;&#x4E00;&#x5757;&#x53EB;&#x505A;&#x201C;&#x53E5;&#x67C4;&#x6C60;&#x201D;&#x7684;&#x5185;&#x5B58;&#x7A7A;&#x95F4;</strong>&#xFF0C;&#x53E5;&#x67C4;&#x4E2D;&#x5305;&#x542B;&#x4E86;&#x5BF9;&#x8C61;&#x5B9E;&#x4F8B;&#x6570;&#x636E;&#x4E0E;&#x7C7B;&#x578B;&#x6570;&#x636E;&#x5404;&#x81EA;&#x7684;&#x5177;&#x4F53;&#x5730;&#x5740;&#x4FE1;&#x606F;&#x3002;</p>
<p>&#x5F15;&#x7528;&#x7C7B;&#x578B;&#x7684;&#x53D8;&#x91CF;&#x5B58;&#x653E;&#x7684;&#x662F;&#x8BE5;&#x5BF9;&#x8C61;&#x7684;&#x53E5;&#x67C4;&#x5730;&#x5740;&#xFF08;reference&#xFF09;&#x3002;&#x8BBF;&#x95EE;&#x5BF9;&#x8C61;&#x65F6;&#xFF0C;&#x9996;&#x5148;&#x9700;&#x8981;&#x901A;&#x8FC7;&#x5F15;&#x7528;&#x7C7B;&#x578B;&#x7684;&#x53D8;&#x91CF;&#x627E;&#x5230;&#x8BE5;&#x5BF9;&#x8C61;&#x7684;&#x53E5;&#x67C4;&#xFF0C;&#x7136;&#x540E;&#x6839;&#x636E;&#x53E5;&#x67C4;&#x4E2D;&#x5BF9;&#x8C61;&#x7684;&#x5730;&#x5740;&#x627E;&#x5230;&#x5BF9;&#x8C61;&#x3002;</p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201205004430.png" alt="image-20201205004430469"></p>
<h3 id="&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><a name="&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x76F4;&#x63A5;&#x6307;&#x9488;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;</h3>
<p>&#x5F15;&#x7528;&#x7C7B;&#x578B;&#x7684;&#x53D8;&#x91CF;&#x76F4;&#x63A5;&#x5B58;&#x653E;&#x5BF9;&#x8C61;&#x7684;&#x5730;&#x5740;&#xFF0C;&#x4ECE;&#x800C;&#x4E0D;&#x9700;&#x8981;&#x53E5;&#x67C4;&#x6C60;&#xFF0C;&#x901A;&#x8FC7;&#x5F15;&#x7528;&#x80FD;&#x591F;&#x76F4;&#x63A5;&#x8BBF;&#x95EE;&#x5BF9;&#x8C61;&#x3002;&#x4F46;&#x5BF9;&#x8C61;&#x6240;&#x5728;&#x7684;&#x5185;&#x5B58;&#x7A7A;&#x95F4;&#x9700;&#x8981;&#x989D;&#x5916;&#x7684;&#x7B56;&#x7565;&#x5B58;&#x50A8;&#x5BF9;&#x8C61;&#x6240;&#x5C5E;&#x7684;&#x7C7B;&#x4FE1;&#x606F;&#x7684;&#x5730;&#x5740;&#x3002;</p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201205004505.png" alt="image-20201205004505762"></p>
<p>&#x9700;&#x8981;&#x8BF4;&#x660E;&#x7684;&#x662F;&#xFF0C;HotSpot &#x91C7;&#x7528;&#x7B2C;&#x4E8C;&#x79CD;&#x65B9;&#x5F0F;&#xFF0C;&#x5373;&#x76F4;&#x63A5;&#x6307;&#x9488;&#x65B9;&#x5F0F;&#x6765;&#x8BBF;&#x95EE;&#x5BF9;&#x8C61;&#xFF0C;&#x53EA;&#x9700;&#x8981;&#x4E00;&#x6B21;&#x5BFB;&#x5740;&#x64CD;&#x4F5C;&#xFF0C;&#x6240;&#x4EE5;&#x5728;&#x6027;&#x80FD;&#x4E0A;&#x6BD4;&#x53E5;&#x67C4;&#x8BBF;&#x95EE;&#x65B9;&#x5F0F;&#x5FEB;&#x4E00;&#x500D;&#x3002;&#x4F46;&#x50CF;&#x4E0A;&#x9762;&#x6240;&#x8BF4;&#xFF0C;&#x5B83;&#x9700;&#x8981;<strong>&#x989D;&#x5916;&#x7684;&#x7B56;&#x7565;</strong>&#x6765;&#x5B58;&#x50A8;&#x5BF9;&#x8C61;&#x5728;&#x65B9;&#x6CD5;&#x533A;&#x4E2D;&#x7C7B;&#x4FE1;&#x606F;&#x7684;&#x5730;&#x5740;&#x3002;</p>

<script>console.log("plugin-popup....");document.onclick = function(e){ e.target.tagName === "IMG" && window.open(e.target.src,e.target.src)}</script><style>img{cursor:pointer}</style>
                                
                                </section>
                            
    </div>
    <div class="search-results">
        <div class="has-results">
            
            <h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
            <ul class="search-results-list"></ul>
            
        </div>
        <div class="no-results">
            
            <h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1>
            
        </div>
    </div>
</div>

                        </div>
                    </div>
                
            </div>

            
                
                <a href="1.jvm内存结构.html" class="navigation navigation-prev " aria-label="Previous page: 1.jvm内存结构">
                    <i class="fa fa-angle-left"></i>
                </a>
                
                
                <a href="3.对象存亡与垃圾收集算法.html" class="navigation navigation-next " aria-label="Next page: 3.对象存亡与垃圾收集算法.md">
                    <i class="fa fa-angle-right"></i>
                </a>
                
            
        
    </div>

    <script>
        var gitbook = gitbook || [];
        gitbook.push(function() {
            gitbook.page.hasChanged({"page":{"title":"2.HotSpot虚拟机对象探秘.md","level":"5.2","depth":1,"next":{"title":"3.对象存亡与垃圾收集算法.md","level":"5.3","depth":1,"path":"jvm/3.对象存亡与垃圾收集算法.md","ref":"jvm/3.对象存亡与垃圾收集算法.md","articles":[]},"previous":{"title":"1.jvm内存结构","level":"5.1","depth":1,"path":"jvm/1.jvm内存结构.md","ref":"jvm/1.jvm内存结构.md","articles":[]},"dir":"ltr"},"config":{"plugins":["-sharing","splitter","expandable-chapters-small","anchors","sharing-plus","anchor-navigation-ex","favicon","expandable-chapters","toggle-chapters","back-to-top-button","code","-lunr","-search","search-pro","pageview-count","popup","livereload"],"styles":{"website":"./styles/website.css"},"pluginsConfig":{"livereload":{},"splitter":{},"search-pro":{},"sharing-plus":{"qq":false,"all":["facebook","google","twitter","instapaper","linkedin","pocket","stumbleupon"],"douban":false,"facebook":true,"weibo":false,"instapaper":false,"whatsapp":false,"hatenaBookmark":false,"twitter":true,"messenger":false,"line":false,"vk":false,"pocket":true,"google":false,"viber":false,"stumbleupon":false,"qzone":false,"linkedin":false},"popup":{},"code":{"copyButtons":true},"fontsettings":{"theme":"white","family":"sans","size":2},"highlight":{},"anchor-navigation-ex":{"associatedWithSummary":true,"float":{"floatIcon":"fa fa-navicon","level1Icon":"","level2Icon":"","level3Icon":"","showLevelIcon":false},"mode":"float","multipleH1":true,"pageTop":{"level1Icon":"","level2Icon":"","level3Icon":"","showLevelIcon":false},"printLog":false,"showGoTop":true,"showLevel":false},"favicon":{},"back-to-top-button":{},"pageview-count":{},"expandable-chapters-small":{},"sharing":{"qq":false,"all":["google","facebook","weibo","twitter","qq","qzone","linkedin","pocket"],"douban":false,"facebook":false,"weibo":false,"instapaper":false,"whatsapp":false,"hatenaBookmark":false,"twitter":false,"messenger":false,"line":false,"vk":false,"pocket":false,"google":false,"viber":false,"stumbleupon":false,"qzone":false,"linkedin":false},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false},"anchors":{},"toggle-chapters":{},"expandable-chapters":{}},"theme":"default","author":"hzh","pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"variables":{},"title":"计算机 ,java , 大数据 基础知识体系","language":"zh-hans","gitbook":"3.2.3"},"file":{"path":"jvm/2.HotSpot虚拟机对象探秘.md","mtime":"2020-12-04T16:46:20.047Z","type":"markdown"},"gitbook":{"version":"3.2.3","time":"2020-12-30T11:12:56.611Z"},"basePath":"..","book":{"language":""}});
        });
    </script>
</div>

        
    <script src="../gitbook/gitbook.js"></script>
    <script src="../gitbook/theme.js"></script>
    
        
        <script src="../gitbook/gitbook-plugin-splitter/splitter.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-expandable-chapters-small/expandable-chapters-small.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-sharing-plus/buttons.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-expandable-chapters/expandable-chapters.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-toggle-chapters/toggle.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-back-to-top-button/plugin.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-code/plugin.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-search-pro/jquery.mark.min.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-search-pro/search.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-pageview-count/plugin.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-livereload/plugin.js"></script>
        
    
        
        <script src="../gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
        
    

    </body>
</html>

